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Potato and Celeriac Gratin

This recipe for Potato and Celeriac Gratin has been reproduced courtesy of Qbag. So who or what is Qbag?

Qbag provides the ideal solution for healthy and convenient cooking. It allows you to cook a wide range of dishes in the traditional en papillote style in a conventional oven and on a BBQ.

Barbecue cooking is a favourite pastime, but cooking different foods on a BBQ side by side (such as burgers, sausages, chicken, vegetables, fish and fruit) can be a problem. Qbag is the ideal solution as the aluminium foil cooking bags are able to withstand the direct heat on a barbecue and allow you to cook meat, fish and vegetarian recipes next to each other without the transfer of flavours. Qbag is perfect for the gourmet cook, vegetarian / vegan, those with a caravan or people who enjoy camping.

Qbag locks in the flavours of your favourite food by retaining its moisture and succulence whilst cooking on a BBQ or in a conventional oven. The window, which also helps your food breathe, lets you keep an eye on the dish whilst it's cooking and you can peel it back to add ingredients, stir or even have a quick taste.

For where to order your Qbags from visit

Ingredients for Potato and Celeriac Gratin

1 Qbag
200 g celeriac peeled, halved and sliced 3 mm thick
200 g peeled and sliced new potatoes
1 clove of garlic finely sliced
1 tsp chopped thyme leaves
¼ tsp Dijon mustard
125 ml double cream
75 ml semi skimmed milk
Freshly ground pepper
Good pinch of salt

How to make Potato and Celeriac Gratin

  • Combine the sliced celeriac, potato, garlic, thyme and seasoning in a large bowl.
  • Mix the cream, milk and mustard together in a jug.
  • Pour the cream mix over the celeriac, stir to coat all the vegetables, open a Qbag and carefully pour the creamy celeriac in to the bag.
  • Seal the bag with two 2 cm folds, making sure none of the liquid escapes and lay flat on a baking tray.
  • Place in a pre-heated oven at 200°C and cook for 30 minutes.
  • After 30 minutes remove the plastic window and cook for a further 5 minutes to colour.
  • Serve

Serves 4


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